Question

choose the false statement. there are substances in sweat that can kill bacteria. skin does not have a role in regulating body temperature. low ph protects the skin. skin acts as a biological barrier. i dont know yet

Explanation:

To determine the false statement, we analyze each option:

• Sweat contains antimicrobial substances (like dermcidin) that can kill bacteria, so the first statement is true.
• Skin plays a crucial role in regulating body temperature (e.g., through sweating and vasodilation/vasoconstriction), so the statement "Skin does not have a role in regulating body temperature" is false.
• The skin has an acidic (low pH) mantle that helps protect against pathogens, so the third statement is true.
• Skin acts as a biological barrier (physical, chemical, and biological) against external threats, so the fourth statement is true.

Answer:

B. Skin does not have a role in regulating body temperature.